title: Results of revision total hip arthroplasty with Anatomic BR stem: 10-year minimum follow-up.
abstract: Twenty cementless total hip revision arthroplasties using Anatomic BR stems were performed in 20 patients. Fourteen patients, with a mean age of 62.6 years (range 41-74 years) at time of revision surgery, were followed retrospectively for a minimum of 10 years (range 11-15 years). Clinical function and radiographic evidence of implant stability were evaluated. Preoperative femoral deficiencies were evaluated radiographically and classified according to Paprosky type as follows: four Type-II, four Type-IIIA, four Type-IIIB, and two Type-IV femurs. Mean preoperative Harris hip score was 46.3 points (range 29-58 points) and improved to 68.8 points (range 45-90 points) at the most recent follow-up examination. Of the 14 patients followed, six had radiographic evidence of subsidence (axial shift of more than 2 mm after revision with long-stem components). Component fixation showed bone ingrowth in three (21%) patients, inconclusive evidence of ingrowth in six (43%) patients, suboptimal but stable fixation in three (21%) patients, and unstable fixation in two (14%) patients. Based on these we results, we conclude that even with circumferential proximal porous coating and improved proximal geometry, nonmodular femoral implant stability remains unpredictable following total hip arthroplasty revision.
authors.affiliation: Department of Orthopaedic Surgery, Chiba Rehabilitation Center, 1-45-2 Hondacho, Midori-ku, Chiba, Japan. mdddd940@ybb.ne.jp
authors.forename: Tadashi
authors.initials: T
authors.lastname: Tsukeoka
authors.forename: Tae Hyun
authors.initials: TH
authors.lastname: Lee
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Tsuruoka
authors.forename: Tadao
authors.initials: T
authors.lastname: Murata
authors.forename: Masahiko
authors.initials: M
authors.lastname: Suzuki
mesh_terms: D000328:Adult; D000368:Aged; D001175:Arthrography / Q000379:methods; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000473:pathology; D011475:Prosthesis Failure; D012086:Reoperation / Q000379:methods; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D001843:Bone Cements